Medicine for spasmolysis and relieving pain and preparation method
An analgesic and antispasmodic technology, applied in the field of combined medicines, can solve the problems of difficulty in mass preparation and the like
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[0073] 1. Preparation of glycyrrhetinic acid: Add water to the licorice slices and boil for 3 times, respectively for 3 hours, 2 hours, and 1 hour, filter and combine the liquid medicine, add concentrated sulfuric acid until no precipitation occurs, let it stand, filter out the precipitate, and wash with water , dried under reduced pressure to obtain crude glycyrrhizic acid. Reflux extraction with acetone for 3 times to obtain acetone extract, put it at room temperature, add KOH alcohol solution with a concentration of 20% under stirring until it is weakly alkaline (PH8-9), leave it to stand, crystals precipitate, and filter out the crystals (tripotassium glycyrrhizinate Salt), dry under reduced pressure, add glacial acetic acid to melt at 60°C, put it at room temperature, precipitate crystals, filter to obtain monopotassium glycyrrhizic acid, add dilute sulfuric acid with a concentration of 5%, boil and heat for 10 hours, filter with suction, wash with water until neutral , a...
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